 /*******************************************************************************
  * Copyright (c) 2000, 2005 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  * IBM Corporation - initial API and implementation
  *******************************************************************************/
 package org.eclipse.ui.internal;

 import org.eclipse.jface.action.Action;
 import org.eclipse.ui.IWorkbenchPage;
 import org.eclipse.ui.IWorkbenchWindow;
 import org.eclipse.ui.actions.ActionFactory;
 import org.eclipse.ui.internal.dialogs.WorkbenchEditorsDialog;

 /**
  * Implements an action to open a dialog showing all open editors
  * and the recent closed editors.
  */
 public class WorkbenchEditorsAction extends Action implements
         ActionFactory.IWorkbenchAction {

     /**
      * The workbench window; or <code>null</code> if this
      * action has been <code>dispose</code>d.
      */
     private IWorkbenchWindow workbenchWindow;

     /**
      * Constructor for NavigateWorkbenchAction.
      *
      * @param window the window
      */
     public WorkbenchEditorsAction(IWorkbenchWindow window) {
         super(WorkbenchMessages.WorkbenchEditorsAction_label);
         if (window == null) {
             throw new IllegalArgumentException ();
         }
         this.workbenchWindow = window;
         // @issue missing action id
 workbenchWindow.getWorkbench().getHelpSystem().setHelp(this,
                 IWorkbenchHelpContextIds.WORKBENCH_EDITORS_ACTION);
         setActionDefinitionId("org.eclipse.ui.window.switchToEditor"); //$NON-NLS-1$
 }

     /* (non-Javadoc)
      * Method declared on IAction.
      */
     public void run() {
         if (workbenchWindow == null) {
             // action has been disposed
 return;
         }
         IWorkbenchPage page = workbenchWindow.getActivePage();
         if (page != null) {
             new WorkbenchEditorsDialog(workbenchWindow).open();
         }
     }

     /* (non-Javadoc)
      * Method declared on ActionFactory.IWorkbenchAction.
      */
     public void dispose() {
         workbenchWindow = null;
     }
 }

